Which blood component makes up roughly 55 percent of whole blood volume?

Giải thích

Plasma accounts for approximately 55 percent of whole blood and is about 90 percent water carrying proteins, electrolytes and waste products. Red cells make up most of the remaining 45 percent, which corresponds to the hematocrit. White cells and platelets together form only a small fraction, visible as the thin buffy coat after centrifugation.